CN206098086U - Oil -immersed transformer - Google Patents

Abstract

The utility model provides an oil -immersed transformer, include the oil tank of constituteing by case shell and case lid, all be provided with the radiator on the front bezel of constituteing the case shell and the back plate, be provided with the oil level gaugember on constituteing the curb plate of case shell, constitute and also be provided with the radiator on left board and/or the right board of case shell. The utility model has the advantages of because also be provided with the radiator on the left board of constitution case shell and/or the right board, therefore the heat dissipation function of transformer is better, compares prior art, transformer oil's liquid level and the distance between the case lid just can reduce to some extent, consequently the height of whole transformer just can reduce to some extent to material cost can be reduced, occupation space is reduced.

Description

A kind of oil-filled transformer

Technical field

The utility model is related to a kind of oil-filled transformer.

Background technology

In recent years, due to being pulled by upgrading urban and rural power grids engineering, Chinese distribution transformer industry maintains good Growth momentum.At present, the design of oil tank for oil immersion type transformer typically has two kinds, and a kind of is all-sealed, this transformation The oil level indicator of device is arranged on the case lid of fuel tank, and transformer oil is filled in fuel tank, and the corrugated plate on fuel tank is fully relied on when using To absorb expanding with heat and contract with cold for transformer oil.If this transformer is used in the larger area of day and night temperature, due to big by the temperature difference Affect, although the corrugated plate of fuel tank has without the air gap between expansion function, but pasta and case lid, and corrugated plate is excessive Spalling is susceptible in deformation process, causes oil leak, affect the normal operation of equipment.

Another is that, with conservator formula, its oil level indicator is arranged on conservator, and conservator is also referred to as oil conservater, and conservator is arranged Connect in the top of fuel tank and with fuel tank, when the volume of transformer oil is when the lifting of oil temperature expands or reduces, conservator just rises The effect of oil storage and repairing, to ensure in fuel tank all the time full of oil.When the volumetric expansion of transformer oil, row is needed in conservator Go out air, when transformer oil volume-diminished, need to suck air in conservator, in order to ensure in conservator the drying of air and clear It is clean, a dehydrating breather is provided with conservator, the air discharged or suck will be through dehydrating breather.In addition, in order to ensure The normal safe operation of transformer, in addition it is also necessary to which the protection devices such as pressure-relief vent, gas relay are set, therefore this transformer Structure is more complicated, comparison trouble, and work workload is big and cost of manufacture is high.

Authorization Notice No. is CN2682545Y, and authorized announcement date is disclosed for the Chinese utility model patent of 2005.03.02 A kind of antiseep full-sealing oil-immersed transformer, including the fuel tank being made up of case shell and case lid, the front and back panels of case shell are designed as Expansion type corrugate fin, pointer type fuel level indicator is arranged in the right panel of case shell.During oiling, transformer oil is not filled entirely Fuel tank, fluid submergence device body and shunting switch, have a certain distance between transformer oil and case lid, when using, ripple dissipates The gap on backing and fuel tank top meets the demand that transformer oil expands with heat and contract with cold jointly.

Although above-mentioned oil-filled transformer simplifies structure, but only front and back panels is designed as into expansion type corrugated fins Piece, its radiating effect or limited, therefore in order to ensure that being expanded with heat and contract with cold for transformer oil be predominantly absorbed completely, it is necessary to make change There is enough distances between depressor oil and case lid, the height that so may result in whole transformer is higher, both increased material Cost is increased and taken up room again, in addition, pointer type fuel level indicator is arranged in the right panel of fuel tank, is so resulted in and is being used During be inconvenient to observe oil level, be unfavorable for user grasp fuel tank in transformer oil situation.

Utility model content

The purpose of this utility model is to provide a kind of oil-filled transformer of good heat dissipation effect.

In order to solve above-mentioned technical problem, the utility model is adopted the following technical scheme that：

A kind of oil-filled transformer, including the fuel tank being made up of case shell and case lid, the header board for constituting case shell is equal with back plate Radiator is provided with, oil level indicator is provided with the side plate for constituting case shell, constituted and be also equipped with dissipating in the left plate and/or right panel of case shell Hot device.

The oil level indicator is arranged on the header board of case shell and is located at the top of radiator.

Bushing, shunting switch and the low-tension bushing for being connected with the device body in fuel tank is provided with case lid, oil Device body described in submergence and submergence bushing, shunting switch, the transformer oil of low-tension bushing bottom, transformer are injected with case There is gap between the liquid level and case lid of oil.

The radiator is corrugated plate dst radiator, and corrugated plate dst radiator includes the corrugated plate with cavity structure, The cavity of corrugated plate and the inner space of fuel tank.

The beneficial effects of the utility model are：Due to being also equipped with radiator in the left plate and/or right panel that constitute case shell, Therefore more preferably, compared to existing technologies, the distance between liquid level and case lid of transformer oil can for the heat sinking function of transformer To have reduced, therefore the height of whole transformer just can reduce, and such that it is able to reduce material cost, reduce and take sky Between.

Description of the drawings

Fig. 1 is the structural representation of oil-filled transformer in the utility model.

In figure：1. header board；2. left plate；3. right panel；4. corrugated plate dst radiator；5. shunting switch；6. bushing；7. case Lid；8. liquid level；9. low-tension bushing；10. pointer type fuel level indicator；11. device bodies；12. hangers；13. bases.

Specific embodiment

One embodiment of oil-filled transformer is as shown in figure 1, including the fuel tank being made up of case shell and case lid 7, the case Shell is surrounded by header board 1, left plate 2, right panel 3, back plate and base plate, and device body 11 is provided with fuel tank, be provided with case lid 7 for Bushing 6, shunting switch 5 and low-tension bushing 9 that device body 11 in fuel tank is connected, are injected with transformer oil in fuel tank, become Depressor oil immersion there is not device body 11 and bushing 6, shunting switch 5, the bottom of low-tension bushing 9, the liquid level 8 of transformer oil and case lid There is certain gap, the fuel tank is higher than common fuel tank, and bushing 6, shunting switch 5 and low-tension bushing 9 are equal between 7 For extended type.The bottom of case shell is provided with base 13, facilitates the support and installation of transformer, and hanger 12 is provided with case lid 7, side Just the lifting movement of transformer.

Constitute and be provided with radiator in header board 1, left plate 2, right panel 3 and the back plate of case shell, it is in this embodiment, described Radiator is corrugated plate dst radiator 4, and corrugated plate dst radiator 4 includes multiple corrugated plates with cavity structure, corrugated plate The inner space of cavity and fuel tank.

Pointer type fuel level indicator 10 is provided with header board 1, pointer type fuel level indicator 10 is located at the top of corrugated plate dst radiator 4, Oil level so can be conveniently observed, is easy to user to grasp the situation of transformer oil in fuel tank.The center of pointer type fuel level indicator 10 with Liquid level 8 can control the injection rate of transformer oil in sustained height, oiling by observing the pointer position of pin type oil level indicator 10 It is neither too much nor too little, make the center of liquid level 8 and pointer type fuel level indicator 10 just in sustained height, the purpose of do so be make liquid level 8 with Certain clearance distance is kept between case lid 7.

According to the transformer of different model, and in fuel tank device body specification, required holding between liquid level 8 and case lid 7 Clearance distance is different, but the principle of totality is that the clearance distance disclosure satisfy that the demand of expanding with heat and contract with cold of transformer oil, together When do not cause the height of whole transformer higher again.

Due to being provided with radiator on the front, rear, left and right plate for constituting case shell, therefore the heat sinking function of transformer is more preferably, Compared to existing technologies, the distance between liquid level and case lid just can reduce, therefore the height of whole transformer can To have reduced, such that it is able to reduce material cost, reduction takes up room.

The corrugated plate cavity of corrugated plate dst radiator and the inner space of fuel tank, which adds the circulation of transformer oil Area of dissipation, and the gap on fuel tank top can be used for meeting expanding with heat and contract with cold for transformer oil, therefore corrugated plate dst radiator is only Radiating need to be met, corrugated plate is hardly deformed upon, so as to extend the service life of radiator, it is to avoid oil leak, Ensure that the normal operation of equipment.

In the other embodiment of oil-filled transformer：Radiator can also be the appearance with a whole independent heat dissipation cavity Device, opens up the oil-in and oil-out connected with fuel tank inner chamber on container, transformer oil Jing oil-ins enter radiator, and circulation dissipates Jing oil-outs flow back to again fuel tank after heat；Oil level indicator can also be arranged on other side plates in addition to header board；Can only in left plate Radiator is set or radiator is only set on right panel.

Claims (3)

1. a kind of oil-filled transformer, including the fuel tank being made up of case shell and case lid, constitutes and is all provided with the header board of case shell and back plate Radiator is equipped with, on the side plate for constituting case shell oil level indicator is provided with, it is characterised in that：In the left plate and/or right panel of composition case shell Radiator is also equipped with, bushing, shunting switch and low pressure for being connected with the device body in fuel tank are provided with case lid Sleeve pipe, is injected with device body described in submergence and submergence bushing, shunting switch, the transformer of low-tension bushing bottom in fuel tank Oil, has gap between the liquid level and case lid of transformer oil.

2. oil-filled transformer according to claim 1, it is characterised in that：The oil level indicator is arranged on the header board of case shell And positioned at the top of radiator.

3. oil-filled transformer according to claim 1 and 2, it is characterised in that：The radiator is corrugated plate dst and dissipates Hot device, corrugated plate dst radiator includes the corrugated plate with cavity structure, the cavity of corrugated plate and the inner space of fuel tank.